Made from heavy-duty drop-forged Chrome Vanadium Molybdenum steel (Cr-Mo) to withstand extreme levels of torque changes against fasteners. Cr-Mo is better than CrV.
6-point hex socket design prevents round-off deterioration under high torque and hammering stress with use of impact or electric wrenches.
Black Sodium Hydroxide surface finishing for anti-oil, anti-rust, and anti-scratch.
Sturdy and strong blow molded case features socket size labels for organized storage and is secured by two lever metal locks.
Comes with 1/2 drive metric deep long impact sockets：10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm, 22mm, 24mm, 27mm, 30mm, 32mm.